Transcript Introduction of Japanese GPS Augmentation System, QZSS
Status of Multi-GNSS Monitoring Network Establishment
Japan Aerospace Exploration Agency Satoshi Kogure
APEC GIT/15 meeting @Brisbane June 14, 2011
Contents
Introduction
Overview
Call for Application
Participation with own Multi-GNSS Receivers
Other related matters
Data exchange format
Analysis tool
Summary
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Multi-GNSS Monitoring Network Application Demonstration Disaster Mitigation Regional Workshop 1 st Workshop, 25-26 JAN, 2010, @Bangkok Precise Positioning 195 Participants, 18 Countries, 95 Organizations 2 nd Workshop, 21,22 Nov. 2010 @ Melbourne, Australia ITS, Mapping, LBS Other, ionospheric observation etc 3 rd Workshop, joint WS with KARI, beginning of November, 2011, @Cheju, Korea
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Introduction
Total 65 3G(GPS/GLONASS/GALILEO)+QZSS receivers were delivered to JAXA.
Three divided procurements were done through JAXA’s open biding procurement process. Three manufacturers applied to the bid proposing to add QZSS tracking function to their existing 3G products.
JAVAD was selected for all procurement opportunities.
DELTA or SIGMA G3T were modified so as to track and decode QZSS signals.
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JAXA decided to distribute them to establish observation network; To enhance QZSS POD ability, i.e. improve accuracy of orbit and
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clock estimation.
To contribute multi-GNSS demonstration campaign aiming to promote multi-GNSS application in Asia and Oceania region
Overview of Multi-GNSS Monitoring Network(MGM-net)
Multi –GNSS constellation (GPS,GLONASS,GALILEO) LEX
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RINEX
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clockRINEX
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IONEX
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SINEX
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ANTEX etc.
ILRS IGS Monitor Site Monitor Site
・ ・ ・
Monitor Site RTCM BINEX
internet
Data I/F – NTRIP Caster RINEX,IONIX,SINEX, ANTEX … Evaluation, Analysis function.
(Post processing) RTCM,BINEX,RINEX And any parameter Precise Orbit Determination function (Real-time, Post-processing Multi-GNSS Precise Orbit Clock Determination System Multi-GNSS Application Demonstration msg Message Generator LEX L1-SAIF(TBD) msg QZSS Master Control Station (MCS)
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Overviews
Deployment of the MGM net will be done in a stepwise manner.
Step I
Focusing to enhance QZSS orbit & clock estimation.
20 sets which have choke ring DM antennas are to be distributed as core network.
They are to be deployed in the area where QZSS can be observed, i.e. Asia and Oceania region by the end of March 2012.
Step II
Additional 40 sets will be distributed after domestic or international demonstrations by the end of March 2013.
Distributed area will be extended to global area in order to track all GNSS constellations and generate precise orbit and clock estimation product.
Time rate of QZS signal reception (Visibility more than 10 deg elevation angle)
90% 80% 70% 60% 50% 40% 30% 20% IGS Reference Site IGS Site
Overviews Network data and product sharing policy
Adopt same philosophy as IGS project
Observed data is converted to RINEX format for sharing among GNSS community via IGS data center.
Real-time data stream is shared among organizations who provide their resources such as receiver, antenna, site, and data server, participating in MGM-Net applying to this call for application, or joining MGA with their own equipment, as well as IGS Multi-GNSS Pilot Project in IGS,
Products generated using shared observation data from the network will be provided to participants of MGA for multi GNSS applications demonstration.
Call for Application(1/3)
The announcement of “Call for Hosting Site” was issued on JAXA’s web site on June 2 2011.
Intended number of sites
Group A; 20 sites Group B; 40 sites
Eligible applicants
An organisation or site operating existing continuous GNSS observation receiver or network of receivers
“Terms and conditions” should be agreed in advance.
Application form, terms and conditions, guidance are available on the following web site
http://www.satnavi.jaxa.jp/e/news/qz-1106012_e.html
Call for Application(2/3)
Planned schedule for application and selection process
June 2, 2011: Call for hosting site was issued End of August: Dead line for Application and selection process start
End of November: Site Selection to be completed December 2011: Site Installation will start Target of completion of the installation and operation launch
Step I (20 sites): End of March 2012
Step II (40 sites): End of March 2013
Call for Application(3/3)
Requirement for hosting site
Visibility of QZSS constellation
30% or more for QZS-1 observation for the first group
No constrain on QZSS visibility for the second group Continuous and real-time internet access
Better Geometry Satisfy with IGS site requirement
IGS Site Guideline 2.1 -2.3 Air conditioned room or cabinet for receiver, power supply
Atomic clock (not mandatory, but better) Monument/pillar (not mandatory, but better) Detail requirement can be referred to application guidance
Participation with own Multi-GNSS Receivers
No need application and selection process.
Contribution to establishing the network by an organisation which has its own multi-GNSS receiver is welcomed
improve the quality of generated products
increase the robustness of the network.
Please contact the MGA secretariat if you wish to contribute to the network with data from your own multi-GNSS receiver.
Other related matters
Data exchange format
JAXA prepared Draft QZSS extension version of RINEX and RTCM. UNAVCO updated BINEX format including QZSS
JAVAD receivers provided by JAXA has already supported those formats of draft QZSS extension version JAXA will start and keep talking with IGS, RTCM, and UNAVCO about involvement of QZSS to the next formal updates of those international standards for data exchange format.
Analysis tool
The development POD software for multi-GNSS constellation has just started since May 2011.
JAXA and Tokyo University of Marine Science and Technology has being extended RTKLIB, an analysis tool for several kind of PVT computations, to include multi-GNSS constellations.
Summary
Multi-GNSS Monitoring network is planned to be established with 60 multi-constellation receivers provided by JAXA in 2011-2013.
Call for application has just been issued, application guidance, form and terms and conditions are available on;
http://www.satnavi.jaxa.jp/e/news/qz-1106012_e.html
Deadline for the application is 31 August, 2011.
Contributions from other providers, industries who provide own multi-GNSS receiver are highly welcomed.